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#! /bin/sh
# Copyright © 2022 Adam Spragg
# SPDX-License-Identifier: LGPL-3.0-or-later
#
# This file is part of apt-desktop-upgrades
#
# apt-desktop-upgrades is free software: you can redistribute it and/or modify
# under the terms of the GNU Lesser General Public License as published by the
# Free Software Foundation, either version 3 of the License, or (at your option)
# any later version.
#
# apt-desktop-upgrades is distributed in the hope that it will be useful, but
# WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
# FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License
# for more details.
#
# You should have received a copy of the GNU Lesser General Public License along
# with apt-desktop-upgrades. If not, see <https://www.gnu.org/licenses/>.
set -e
SBINDIR=/usr/local/sbin
UPDATE_SYMLINK="/system-update"
UPDATE_TARGET="${SBINDIR}/adu-upgrade"
apt-get -qq update
upgrades=$(apt -qq list --upgradeable 2>/dev/null | wc -l)
if [ "$upgrades" -eq 0 ]; then
exit 0
fi
apt-get -q -y --with-new-pkgs --download-only upgrade | grep "^Get:" | cat
ln -s -- "${UPDATE_TARGET}" "${UPDATE_SYMLINK}" 2>/dev/null || true
# Notify logged-in users that updates are available
if command -v notify-send >/dev/null; then
# Disable shellcheck's "For loops over find output are fragile" warning here
# because filenames in `/run/user` are safe, and doing it The Right Way is a
# pain because of the environment variable.
# shellcheck disable=SC2044
for addr in $(find /run/user -type s -name bus 2>/dev/null); do
export DBUS_SESSION_BUS_ADDRESS="unix:path=$addr";
runuser -u "$(stat -c "%U" "$addr")" -- \
notify-send --app-name=apt-desktop-upgrades \
"$upgrades system updates available" \
"To install them, reboot when it is convenient"
done
fi
echo "$upgrades updates available"
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